Plants with a short, creeping rhizome. Stem erect, with glandular hairs, with 1 or 2 sheaths at base and 3 or 4 leaves above. Leaf blade elliptic to elliptic-lanceolate, 5-10 × 1.5-3 cm, both surfaces pubescent, apex subacute. Inflorescence terminal, with 1 flower; peduncle slender, with glandular hairs; floral bracts foliaceous, lanceolate, 2.5-3.5 cm. Flower yellowish to yellow, rarely with small red spots on lip, 5-6 cm in diam. Dorsal sepal ovate-lanceolate, 2-4 × 0.8-1.4 cm, glabrous, apex acuminate; synsepal ovate, 2-3.5 × 1-1.5 cm, glabrous, apex shallowly 2-lobed. Petals not twisted, linear-lanceolate, 2.3-4 × 0.6-0.8 cm, densely pubescent at adaxial base, apex acuminate; lip deeply pouched, subglobose, 2-2.5 × ca. 1.7 cm, with a small mouth often toothed margined. Staminode oblong, 6-7 mm, base with a stalk 1-2 mm. Fl. Mar-Apr. 2n = 20*.
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